Most of my knife use has been opening envelopes and packages, so any grind is sufficient for that.

I dabble in bushcraft though and there tend to prefer convex grinds or full-flat grinds. I've got a Mora but never liked the scandi grind so I put a small secondary bevel on it.

Aesthetically I think flat-saber grinds are what blades 'should' look like, but that's just aesthetics; in the end I'm function over form.

my least-favorite is the hollow grind. I get that they're easier to mass-manufacture, and I've never had one break or chip, but the thinness behind the edge has always left me with the feeling that the blade is just fragile.